Scripted beans not updated after a script compilation error in getScriptedObjectType [SPR-14007]

[spring-projects-issues]

Anton Rokhmistrov opened SPR-14007 and commented

This is a duplicate of #9034.
It does not work again because "ScriptFactory.requiresScriptedObjectRefresh(ScriptSource)" is not used in "GroovyScriptFactory#getScriptedObject(ScriptSource scriptSource, Class<?>... actualInterfaces)"

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Affects: 3.2.16, 4.2.2, 4.2.5

Issue Links:

• Refreshable beans are not updated if AbstractApplicationContext.getBeansOfType() is called [SPR-4356] #9034 Refreshable beans are not updated if AbstractApplicationContext.getBeansOfType() is called

Referenced from: commits c2eb5e1, 0597ff1, 05ab769

Backported to: 3.2.17

2 votes, 4 watchers

[spring-projects-issues]

Anton Rokhmistrov commented

I think come clarification is needed because it's not exactly the duplicate.

The problem happens when groovy script is invalid (syntax error etc.). Then result of a call to the groovy bean is unpredictable, it can execute old version of the script or throw an exception depending on whether AbstractApplicationContext.getBeansOfType() was called or not.

Example scenario:
Call to getScriptedObjectType

1. scriptSource.lastModified is updated
2. getGroovyClassLoader().parseClass throws CompilationException [1]
3. this.scriptClass is not updated

Call to getScriptedObject

1. scriptSource.isModified() return false [2]
2. returns outdated class [3]

@Override
public Class<?> getScriptedObjectType(ScriptSource scriptSource) throws IOException, ScriptCompilationException {
....
if (this.scriptClass == null || scriptSource.isModified()) {
	// New script content...
	this.wasModifiedForTypeCheck = true;
	this.scriptClass = getGroovyClassLoader().parseClass( [1]
				scriptSource.getScriptAsString(), scriptSource.suggestedClassName());

	if (Script.class.isAssignableFrom(this.scriptClass)) {
			// A Groovy script, probably creating an instance: let's execute it.
			Object result = executeScript(scriptSource, this.scriptClass);
			this.scriptResultClass = (result != null ? result.getClass() : null);
			this.cachedResult = new CachedResultHolder(result);
	}
	else {
		this.scriptResultClass = this.scriptClass;
	}
}
....
}

@Override
public Object getScriptedObject(ScriptSource scriptSource, Class<?>... actualInterfaces)
			throws IOException, ScriptCompilationException {
    if (this.scriptClass == null || scriptSource.isModified()) { [2]
       // New script content...
       this.scriptClass = getGroovyClassLoader().parseClass(
			scriptSource.getScriptAsString(), scriptSource.suggestedClassName());

	if (Script.class.isAssignableFrom(this.scriptClass)) {
	        // A Groovy script, probably creating an instance: let's execute it.
		Object result = executeScript(scriptSource, this.scriptClass);
		this.scriptResultClass = (result != null ? result.getClass() : null);
		return result;
	}
	else {
		this.scriptResultClass = this.scriptClass;
	}
	}
	scriptClassToExecute = this.scriptClass; [3]
}

[spring-projects-issues]

Juergen Hoeller commented

Good point: We're resetting the scriptClass, scriptResultClass and cachedResult fields in GroovyScriptFactorty when we run into a CompilationFailedException now, both in getScriptedObject and getScriptedObjectType. Analogously in BshScriptFactory as well.